Home
Batteries & Energy Storage
SimpliPHI 6.6 Battery – 6.65 kWh 48 V Stackable Module

SimpliPHI 6.6 Battery – 6.65 kWh 48 V Stackable Module

In Stock

Get yours today!

9+ sold

In the last 7 days

Flat Rate Shipping - Calculated at Checkout

Delivery timeframe shown above at checkout

Lifetime Customer Support

Unlimited lifetime support, always available.

SimpliPHI 6.6 Battery – 6.65 kWh 48 V Stackable Module

Trusted by 1,000s of Contractors & Installers

Available to Order

SKU PES-ESS-BTS-0274

OEM Authorized Dealer BABA Compliant Full OEM Warranty 7-10 Business Day Delivery

$2,775.05 USD

$ $2,775.05 USD

Sale Sold out

LOWEST PRICE Save $206.88 vs the lowest of 1 tracked competitor

Quantity

Your quantity 1 pcs

System size —

Est. order total —

Datasheet

Buying 5+ pallets or a truckload? Get a Volume Quote →

Offloading overstock or decommissioned gear? We buy surplus equipment →

Secure checkout · Wire/ACH accepted on quotes · Freight arranged for you

SKU: PES-ESS-BTS-0274
MPN: SPHI-6.6-LO

Complete the job

Compatible gear contractors pair with this item

Hybrid inverter Cotek SD1500-148 1,500W 48V Inverter

$655.00

Battery rack EG4 3-Slot Battery Rack â€“ Heavy-Duty Indoor Cabinet with 300A Busbars

$428.14

Secure Payment Methods

In Stock

Get yours today!

9+ sold

In the last 7 days

Flat Rate Shipping - Calculated at Checkout

Delivery timeframe shown above at checkout

Lifetime Customer Support

Unlimited lifetime support, always available.

In High Demand! Order Now To Secure Your Items

Request a Free Quote

Got Questions? We’re Here to Help!

Our support team is ready to assist you with product guidance, order details, or any questions you might have.

(888) 876-0007

Instant Live Chat

Mon-Fri 10am-6pm EST

View full details

SimpliPHI 6.6 Battery – 6.65 kWh 48 V Stackable Module $2,775.05

Specifications

Voltage 48V

Capacity 6.65kWh

Product Category Battery

What is your return policy?

Returns are free in the first 30 days with no restocking or processing fees, although the customer may be responsible for paying return shipping. See our complete return policy on our Shipping, Delivery, and Returns page linked in the footer of this website.

What’s covered by your return policy?

Our returns policy covers all purchases made through Portlandia Electric Supply. For warranty issues, as authorized distributors, we honor the full manufacturer warranty of ALL the brands on our website. See our complete returns and warranty policies on our Shipping, Deliver, and Returns page.

How long will it take to receive my order?

All orders are processed within 72 hours and you can expect delivery on most orders within 5-7 business days. You will receive access to our customer portal after ordering, where it is easy to track all your shipments. See our Shipping, Delivery and Returns page for more details.

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

Our legendary lifetime customer support has helped make us the #1 online solar retailer! We have a dedicated team of solar professionals standing by to help you navigate the world of solar with ease. From selecting the perfect solar kit to installation and beyond, we provide support and expertise at every step of the journey.If you need help with ordering, shipping, troubleshooting, expanding your system, warranty issues, or anything else you have questions about for as long as you own your Portlandia Electric Supply equipment, we’ve got you covered: we’re always only a phone call or email away.

SimpliPHI 6.6 battery – 6.65 kWh 48 V Stackable Module

The SimpliPHI 6.6 battery delivers 6.65 kWh of safe, long-life lithium ferro-phosphate storage at 48 V. RapidStak™ connectors let installers build three-high stacks (≈ 20 kWh) in minutes—no wiring or DIP switches required.

Key Features

Wire-free, stackable design

RapidStak™ power-plus-communications plugs click together, allowing three SimpliPHI 6.6 battery modules to be stacked in under 5 minutes.

High continuous discharge

Up to 130 A continuous and 240 A (2 s) surge current keeps large loads running without external boost.

Long cycle life

LiFePO₄ chemistry, active BMS and passive cooling give the SimpliPHI 6.6 battery up to 4 500 cycles @ 100 % DoD.

Specifications

**SimpliPHI 6.6 battery – complete technical data**
Nominal voltage	51.2 V DC
Voltage range	44.8 – 56.8 V DC
Nominal capacity	130 Ah / 6 656 Wh
Continuous discharge current	130 A
Continuous charge current	100 A
Surge current (2 s)	240 A
Round-trip efficiency	≥ 96 %
Cycle life	4 500 cycles @ 100 % DoD 6 000 cycles @ 80 % DoD
Dimensions (W × D × H)	28.6 × 6.7 × 17.3 in (726 × 170 × 439 mm)
Weight	125 lb (56.7 kg)
Ingress protection	IP 20 (single) / IP 65 (stacked)
Operating temperature	−20 °C – +55 °C (discharge)
Communications	CAN & RS-485
Certifications	UL 9540, UL 9540A, UL 1973, UN 38.3, IEC 62619
Warranty	10 years (3 MWh throughput per kWh)

Installation & Warranty

Each SimpliPHI 6.6 battery carries a 10-year warranty and is rated IP 65 when stacked—perfect for indoor or outdoor installs.

What is your return policy?

What’s covered by your return policy?

How long will it take to receive my order?

What are your financing and payment options?

We offer several ways to pay to make getting your solar kit simple:

Credit Card: if the purchase is greater than your card’s limit, you can split the cost onto multiple cards as well as Paypal, financing through Affirm, and ACH/bank transfer

You can arrange financing during the checkout process, or scroll further down this page for more details. Please note, if you'd like to finance your order, you can do so instantly, right at checkout.

How does your Lifetime Customer Support work?

SimpliPHI 6.6 battery – 6.65 kWh 48 V Stackable Module

Key Features

Wire-free, stackable design

RapidStak™ power-plus-communications plugs click together, allowing three SimpliPHI 6.6 battery modules to be stacked in under 5 minutes.

High continuous discharge

Up to 130 A continuous and 240 A (2 s) surge current keeps large loads running without external boost.

Long cycle life

LiFePO₄ chemistry, active BMS and passive cooling give the SimpliPHI 6.6 battery up to 4 500 cycles @ 100 % DoD.

Specifications

**SimpliPHI 6.6 battery – complete technical data**
Nominal voltage	51.2 V DC
Voltage range	44.8 – 56.8 V DC
Nominal capacity	130 Ah / 6 656 Wh
Continuous discharge current	130 A
Continuous charge current	100 A
Surge current (2 s)	240 A
Round-trip efficiency	≥ 96 %
Cycle life	4 500 cycles @ 100 % DoD 6 000 cycles @ 80 % DoD
Dimensions (W × D × H)	28.6 × 6.7 × 17.3 in (726 × 170 × 439 mm)
Weight	125 lb (56.7 kg)
Ingress protection	IP 20 (single) / IP 65 (stacked)
Operating temperature	−20 °C – +55 °C (discharge)
Communications	CAN & RS-485
Certifications	UL 9540, UL 9540A, UL 1973, UN 38.3, IEC 62619
Warranty	10 years (3 MWh throughput per kWh)

Installation & Warranty

Each SimpliPHI 6.6 battery carries a 10-year warranty and is rated IP 65 when stacked—perfect for indoor or outdoor installs.

//www.portlandiaelectric.supply/cdn/shopifycloud/storefront/assets/no-image-2048-a2addb12.gif

Prepare for Anything

From hurricanes to blackouts, reliable solar power ensures you're able to keep your home & family safe no matter what comes your way.

Solar Power Made Easy

Making one-click solar solutions simple since 2018. Whether you’re powering a cabin, charging devices, or backing up your home.

Secure Your Independence

Say goodbye to reliance on the energy companies. Enjoy the same freedom that 50,000+ customers have with their own solar power system.

Customer Success Stories

Troy P

EG4 off-grid base kit, Happy with my purchase.

This is the first stage of my three planned purches. I got the eg4 inverter 6000 XP base kit with six 400 watt panels and the two server rack batteries. Did a little online research and followed the instructions and it got set up without any issues. Right now I'm just running it in my garage on a single outlet and have been running dual 750 watt water distillers with it. Once I get the second inverter and a bunch more panels and batteries, I plan on attaching it to my subpanel in my house that has my lights and outlets and appliances on it. Then I'll get a soft start for my AC and blower and run it on my main panel.

Jacob B

Easy Process, Genuine Support

Trying to pick the correct solar system for your needs can be very technical and frustrating. I wanted to thank Yvhan and the Portlandia Electric supply team for their patience and helpful attitudes through multiple calls. I feel like we were able to narrow it down to what worked for me and my family. My system works great and I couldn't be happier to have picked Portlandia Electric Supply.

Patrick B

Off Grid Solar Purchase

I wanted to get an offgrid solar system for years but didn’t know where to start. I found Portlandia Electric Supply on Facebook and decided to submit a quote. Within 24 hours I had a custom proposal that was almost half the price of the companies I had previously got quotes from. My wife and I decided to order online and the kit came in a timely manner and it was an easy install. Great company to work with!

James Martin

Highly Recommend

I would like to take the time to express the outstanding service that I was provided with by Portlandia Electric Supply. They provided me with all the answers to my questions, and after reviewing our quote over the phone I felt comfortable proceeding to order my kit. It’s exactly what I needed and they were there to help us over the phone when we had questions installing it. I highly recommend others in need to choose Portlandia Electric Supply.

Brian H

Solar Kit for Mobile Work Van

As a professional videographer, I needed reliable power on the go.Portlandia Electric Supply Delta Pro and roof-mounted panels were the perfect solution. Setup was easy, and the kit included everything needed. The Delta Pro powers my cameras, lights, laptop, and a small fridge with impressive battery capacity.

Keith S

Best Tech Support

You folks have been wonderful guiding me through the ins and outs of going solar. Plus your tech guys Rod and Nelson are the absolute best. They explained all the different aspects of inverters, batteries and how to keep them in top condition. Too much more to put here… but no other company has the 100% tech support you provide for your customers!

Coll A

Great Experience

My experience with Portlandia Electric Supply has been excellent. Before the sales, they answered all my questions to assure that I got what I needed. After the sales they continued to support me with answers and help. I had a warranty issue with a unit, and it was handled as well as possible. I would recommend them to anyone looking to go solar.

Troy P

EG4 off-grid base kit, Happy with my purchase.

Jacob B

Easy Process, Genuine Support

Patrick B

Off Grid Solar Purchase

James Martin

Highly Recommend

Brian H

Solar Kit for Mobile Work Van

Keith S

Best Tech Support

Coll A